I am worried about tinnitus in my ear.

Since I injured my ear in an accident while in the military, I have been struggling with a ringing sound in one ear ever since.

I went to the hospital for a consultation, but they said there is no special method. During my school days, I couldn't concentrate while studying, so my efficiency was very low. Even now, when I get very tired, my symptoms worsen, and I feel very exhausted.